Amber's Favorite Coffee Cake

• 2 cups all-purpose flour
• 3/4 cup white sugar
• 2 teaspoons baking powder
• 1/2 teaspoon salt
• 1/2 cup butter
• 1 egg
• 3/4 cup milk, or as needed
• 1 1/2 teaspoons vanilla extract
• 1/4 cup all-purpose flour
• 2/3 cup white sugar
• 1 teaspoon ground cinnamon
• 1/4 cup butter

1. Preheat oven to 350 degrees F (175 degrees C). Grease (cooking spray) springform pan. Make the streusel topping: In a medium bowl, combine 1/4 cup flour, 2/3 cup sugar and 1 teaspoon cinnamon. Cut in butter until mixture resembles coarse crumbs. Set aside.
2. In a large bowl, combine 2 cups flour, 3/4 cup sugar, baking powder and salt. Cut in butter until mixture resembles coarse crumbs. Crack an egg into a measuring cup and then fill add milk to make 1 cup. Stir in vanilla. Pour into crumb mixture and mix just until moistened. Spread into prepared pan.
3. Bake in the preheated oven for 20, or until a toothpick inserted into the center of the cake comes out clean. Sprinkle top with streusel. Bake for another 10min.